在Stückelberg入口方案中的同位旋破坏暗物质
Isospin violating dark matter in Stückelberg portal scenarios
摘要：
隐藏扇区的场景中，暗物质（DM）与标准模型物质场通过交换大量的Z'玻色子相互作用是很好的动机，某些弦论建设。在这项工作中，我们深入研究了这种情况下的现象学方面，发现他们提出了一个明确的和可测试的直接DM搜索的后果。我们表明，这样的字符串激励Stückelberg门户网站自然会导致同位旋违反DM粒子与核的相互作用。我们发现，对于自旋无关（fn/fp）和自旋相关（an/ap）的相互作用，DM与中子和质子的耦合之间的关系是非常灵活的，取决于额外U（1）规范群下夸克的电荷。我们表明，在这种结构中，这些比率一般不同于正负1（即质子和中子的不同耦合），从而导致与其他流行门户网站的潜在可测量的区别。最后，我们将从搜索的双喷射和双轻子共振在大型强子对撞机以及LUX边界上的弹性散射DM关闭核子确定实验允许的值fn/fp和一个/AP的界限。
英文摘要：
Hidden sector scenarios in which dark matter (DM) interacts with the Standard Model matter fields through the exchange of massive Z' bosons are well motivated by certain string theory constructions. In this work, we thoroughly study the phenomenological aspects of such scenarios and find that they present a clear and testable consequence for direct DM searches. We show that such string motivated Stückelberg portals naturally lead to isospin violating interactions of DM particles with nuclei. We find that the relations between the DM coupling to neutrons and protons for both, spin-independent (fn/fp) and spin-dependent (an/ap) interactions, are very flexible depending on the charges of the quarks under the extra U(1) gauge groups. We show that within this construction these ratios are generically different from plus and minus 1 (i.e. different couplings to protons and neutrons) leading to a potentially measurable distinction from other popular portals. Finally, we incorporate bounds from searches for dijet and dilepton resonances at the LHC as well as LUX bounds on the elastic scattering of DM off nucleons to determine the experimentally allowed values of fn/fp and an/ap.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
